How to Use Your Mac as a Server:
Turn your Mac Mini into a server! Yes, that's right, with a little know-how and a little spunk, you can turn an inexpensive Mac Mini computer into a server to provide services over you network. You won't even need the Mac OS X Server, just the Mac OS X Client, so there is no extra software to buy, just the Mac Mini and it's operating system.
This video tutorial from FreeMacBlog and MacMiniColo will show you how to setup FTP on your computer for your Mac Mini server. Take a look at FTP (file transfer protocol) servers. This is an incredibly useful way to share large files and to update your website. This tutorial on FTP assumes that you already have a static ip set up on your machine.